Spatial Interpolation of Annual Runoff in Ungauged Basins Based on the Improved Information Diffusion Model Using a Genetic Algorithm

Table 5

The RMSE, , , and MAPE of five different models in Hongqi site and Baimasi site (where boldface font indicates the best performance).

Site	Model	RMSE			MAPE
Hongqi	IDW	6.42	0.8691	0.7572	92.55%
	COK	5.32	0.8951	0.8103	67.32%
	SIDM	5.61	0.9037	0.8239	69.14%
	OIDM	5.01	0.9124	0.8311	53.68%
	GIDM	3.91	0.9251	0.8317	38.02%
Baimasi	IDW	3.24	0.8238	0.7143	93.13%
	COK	2.91	0.8451	0.7326	65.28%
	SIDM	3.03	0.8572	0.7469	69.10%
	OIDM	2.80	0.8913	0.7905	44.89%
	GIDM	2.04	0.9116	0.8076	26.29%
The average	IDW	4.83	0.8465	0.7358	92.84%
	COK	4.115	0.8701	0.7715	66.30%
	SIDM	4.32	0.8805	0.7854	69.12%
	OIDM	3.905	0.90185	0.8108	49.29%
	GIDM	2.975	0.9184	0.8197	32.16%